Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is : [Given that 1 L bar = 100 J]A. 30 JB. `-30 J`C. `5kJ`D. `25J`

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25

1.	Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is : [Given that 1 L bar = 100 J]A. 30 JB. `-30 J`C. `5kJ`D. `25J`
Answer» Correct Answer - B A gas expands against a constant external pressure is irreversible process. The work done in irreversible process`=-P_(ext)triangleV` `=-P_(ext)(V_(2)-V_(1))` `=-2(0.25-0.1)` `=-2xx0.15` bar `-L//L`-bar `=-30xx100J` `=-30J` and work done by the gas is `+30J`

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Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is : [Given that 1 L bar = 100 J]A. 30 JB. `-30 J`C. `5kJ`D. `25J`

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